Objective: To determine the role of preoperative serum cancer antigen 125 (CA 125) in malignant ovarian germ cell tumors (MOGCTs).
Materials And Methods: Using information from medical databases of Asan Medical Center (Seoul, Korea), we investigated 161 patients with histologically diagnosed MOGCTs and whose preoperative serum CA 125 had been checked. We determined the optimal cutoff value of CA 125 as > 249.5 U/mL in MOGCTs using a receiver operating characteristic curve.
Results: The median patient age was 24 years (range, 6-52 years). The most common histologic type was immature teratoma. Most patients had stage I disease. Thirty-two patients (19.9%) had elevated preoperative serum CA 125 levels over 249.5 U/mL. On univariate analysis, tumor size, advanced stage, the presence of ascites, ovarian surface involvement, and tumor rupture were significantly associated with elevated preoperative CA 125 levels (>249.5 U/mL). In the median follow-up time of 87 months (range, 9-271 months), 14 patients had a recurrence, and 5 died of the disease. Patients with an elevated serum preoperative CA 125 level (>249.5 U/mL) had poorer disease-free survival, but this was not statistically significant. However, elevated preoperative CA 125 (>249.5 U/mL) was significantly associated with poorer overall survival.
Conclusions: Elevated preoperative serum CA 125 may have prognostic value in patients with MOGCTs.
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